Mine is an Auto. I too thought it might be a park/neutral issue so last night (yes, it wouldn't start last night after a week of starting fine) I tried shifting the gears a number of times. Nope still didn't start. I will try it this morning and I wouldn't be surprised if it starts right up. I'm really disappointed with this and am going to starting calling and writing letters. Every piece of $^!t on the road will start but not my XF. What good is it if it drives great but I can't drive it?